feat(glm): update default model to GLM-5 and fix all GLM pricing

- Update default GLM model from glm-4.7 to glm-5 across configs, presets, help text, and fallbacks
- Add glm-5 pricing entry ($1.00/$3.20 per M tokens, OpenRouter verified)
- Fix incorrect glm-4.7 pricing: $0.60/$2.20 -> $0.40/$1.50 (OpenRouter verified)
- Fix incorrect glm-4.6 pricing: $0.60/$2.20 -> $0.35/$1.50 (OpenRouter verified)
- Fix incorrect glm-4.5 pricing: $0.60/$2.20 -> $0.35/$1.55 (OpenRouter verified)
- Keep all previous GLM model entries for backward compatibility

Closes #532

src/api/services/provider-presets.ts

@@ -65,7 +65,7 @@ export const PROVIDER_PRESETS: ProviderPreset[] = [
     description: 'Claude via Z.AI',
     baseUrl: 'https://api.z.ai/api/anthropic',
     defaultProfileName: 'glm',
-    defaultModel: 'glm-4.7',
+    defaultModel: 'glm-5',
     apiKeyPlaceholder: 'ghp_...',
     apiKeyHint: 'Get your API key from Z.AI',
     category: 'alternative',
@@ -77,7 +77,7 @@ export const PROVIDER_PRESETS: ProviderPreset[] = [
     description: 'GLM with Thinking mode support',
     baseUrl: 'https://api.z.ai/api/coding/paas/v4/chat/completions',
     defaultProfileName: 'glmt',
-    defaultModel: 'glm-4.7',
+    defaultModel: 'glm-5',
     apiKeyPlaceholder: 'ghp_...',
     apiKeyHint: 'Same API key as GLM',
     category: 'alternative',
@@ -156,10 +156,10 @@ export const PROVIDER_PRESETS: ProviderPreset[] = [
   {
     id: 'ollama-cloud',
     name: 'Ollama Cloud',
-    description: 'Ollama cloud models via direct API (glm-4.7:cloud, minimax-m2.1:cloud)',
+    description: 'Ollama cloud models via direct API (glm-5:cloud, minimax-m2.1:cloud)',
     baseUrl: 'https://ollama.com',
     defaultProfileName: 'ollama-cloud',
-    defaultModel: 'glm-4.7:cloud',
+    defaultModel: 'glm-5:cloud',
     apiKeyPlaceholder: 'YOUR_OLLAMA_CLOUD_API_KEY',
     apiKeyHint: 'Get your API key at ollama.com',
     category: 'alternative',